Windows Phone and iOS are growing faster than Android in the U.S.

A new report suggests that Apple and Microsoft’s mobile platforms are growing faster than Google’s in the United States. According to data released by Kantar Worldpanel, iPhone and Windows Phone sales have increased 2.3 percentage points and 1.8 percentage points, respectively, in the past year. Sales of Android smartphones which grew 1.4 percentage points year-over-year during the same amount of time. In a three-month period ending in April 2013, the research firm found that Android devices accounted for 51.7% of smartphone sales in the U.S., compared to 41.4% from the iPhone and 5.6% from Windows Phone devices.

Verizon was once again the top carrier with 36.3% of smartphones sold, ahead of AT&T at 26.3%, Sprint with 13.1% and T-Mobile at 11.3%. Verizon and Sprint experienced growth of 1.8 percentage points and 1.4 percentage points, respectively, while smartphone sales at AT&T remained flat and T-Mobile sales declined.

“Verizon and Sprint’s slight increase is thanks to the growth of two key players,” Kantar Worldpanel ComTech analyst Mary-Ann Parlato explained. “For Verizon, Windows’ share rose from 0.2% in the three months ending April 2012 to 6.8% by the period ending April 2013. At Sprint, they continued to reap share increases thanks to their iOS offering — iOS sales share on Sprint grew from 33.4% to 38.4% over the last year.”